Patent Application
20050061837
The present invention relates to food and beverage dispenser design. More particularly, the invention relates to a method and apparatus for implementing food and beverage dispensers, wherein traditional design methodologies directed toward obtaining minimized component costs are largely set aside in favor of mass customization, reduced design and ownership costs, and shorter design cycles.
The food and beverage dispenser industry is continuously challenged to produce dispensers of widely varied specification. For example, a particular restaurant chain may desire a dispenser having a keypad with a particular number and type of identified flavors with or without automated portion controls while another restaurant chain may desire a keypad having only simple on and off type controls for one or two beverage products. Depending upon the specifications of the desired dispenser, keypads and/or flow control valves of widely varying capabilities may be necessary. Traditionally, the industry has met customer needs by determining the necessary components and then designing a centralized controller comprising necessary hardware and software for operation of the various keypads, valve modules and the like. Unfortunately, this usually results in the design of another unique centralized controller for each dispenser. Consequently, the industry is generally hampered in its efforts to quickly and economically respond to customer requests. Further, a simple modification such as the addition of a single button to a keypad could necessitate complete redesign of the controller, which may be prohibitively costly.
It is therefore an object of the present invention to entirely overhaul the manner in which food and beverage type dispensers are produced such that minor and even major configuration changes may be handled with minimal time and effort. Additionally, it is an object of the present invention to set forth such a design methodology that in no manner limits the introduction of improved or more capable components. Finally, it is an object of the present invention to set forth such a design methodology that in fact reduces overall cost of ownership of a food or beverage dispenser.
In a distributed architecture for a food/beverage dispenser, a CPU module controls operations for the food/beverage dispenser, and a first component module coupled with the CPU module controls a first operation of the food/beverage dispenser responsive to instructions received from the CPU module. A first bus connects the CPU module with the first component module, and a communications interface interfaces the CPU module with the first component module. A second component module connected to the CPU module through a bus connection to the first component module controls a first operation of the food/beverage dispenser responsive to instructions received from the CPU module. Alternatively, a second component module connected to the CPU module through a bus connection to the first component module controls a second operation of the food/beverage dispenser responsive to instructions received from the CPU module. Each of the first and second component modules includes a microcontroller that executes the first and/or second operations of the food/beverage dispenser responsive to instructions received from the CPU module. Each of the first and second component modules includes a bus interface that controls access to the first bus for the microcontrollers of the first and second component modules.
A second component module connected with the CPU module via a second bus controls a second operation of the food/beverage dispenser responsive to instructions received from the CPU module. The communications interface interfaces the CPU module with the second component module. A third component module connected to the CPU module through a bus connection to the second component module controls a second operation of the food/beverage dispenser responsive to instructions received from the CPU module. Alternatively, a third component module connected to the CPU module through a bus connection to the second component module controls a third operation of the food/beverage dispenser responsive to instructions received from the CPU module. Each of the second and third component modules includes a microcontroller that executes the second and/or third operations of the food/beverage dispenser responsive to instructions received from the CPU module. Each of the second and third component modules includes a bus interface that controls access to the second bus for the microcontrollers of the first and second component modules.
The CPU module includes a microcontroller, a ROM, a RAM, a non-volatile memory, an auxiliary communications interface. The microcontroller executes programming instructions that facilitate operations for the food/beverage dispenser. The ROM stores the application code executed by the microcontroller in facilitating operations for the food/beverage dispenser. The RAM stores variables required by the microcontroller in executing the programming instructions that facilitate the operations for the food/beverage dispenser. The non-volatile memory stores configuration information required by the microcontroller to execute application code stored in the ROM and historical information for the food/beverage dispenser. The auxiliary communications interface interfaces the CPU module with external devices. A low power module, a medium power module, or a high power module supplies power to the CPU module.
In a distributed architecture for a food/beverage dispenser, a CPU module controls operations for the food/beverage dispenser and a first component module coupled with the CPU module controls an operation of the food/beverage dispenser responsive to instructions received from the CPU module. The first component module is enabled during initialization of the food/beverage dispenser such that the first component module responds to a component identifier signal output by the CPU module. The CPU module assigns an address for the first component module after receiving a response to the component identifier signal. Further, the CPU module requests the first component module provide a component type after assigning an address to the first component module.
A second component module coupled to the CPU module through a bus connection with the first component module controls an operation of the food/beverage dispenser responsive to instructions received from the CPU module. The CPU module instructs the first component module to enable the second component module after assigning an address to the first component module. The CPU module outputs a component identifier signal and instructs the first component module to ignore the component identifier signal. The second component module thus responds to the component identifier signal output from the CPU module. The CPU module accordingly assigns an address for the second component module after receiving a response to the component identifier signal. The CPU module further requests the second component module provide a component type after assigning an address to the second component module.
It is therefore an object of the present invention to provide a distributed architecture for a food/beverage dispenser that overcomes limited space issues.
It is another object of the present invention to provide a distributed architecture for a food/beverage dispenser that streamlines the design or modification of the food/beverage dispenser.
It is a further object of the present invention to provide a distributed architecture that distributes monitoring and control functions to component modules so that such functions do not require centralization on a CPU module 10.
Still other objects, features, and advantages of the present invention will become evident to those of ordinary skill in the art in light of the following.
Although the scope of the present invention is much broader than any particular embodiment, a detailed description of the preferred embodiment follows together with illustrative figures, wherein like reference numerals refer to like components, and wherein:
Although those of ordinary skill in the art will readily recognize many alternative embodiments, especially in light of the illustrations provided herein, this detailed description is exemplary of the preferred embodiment of the present invention, the scope of which is limited only by the claims appended hereto.
Referring to the Figures, a CPU module 10 of the present invention permits implementation of a distributed architecture in a food/beverage dispenser 17 such that traditional design methodologies directed toward obtaining minimized component costs are largely set aside in favor of mass customization, reduced design and ownership costs, and shorter design cycles.
As illustrated in
The CPU module 10 in this preferred embodiment overcomes limited space issues within the food/beverage dispenser 17 through the inclusion of hardware adapted to fit within any suitable available space 22 of the food/beverage dispenser 17. The CPU module 10 is further easily connectable to each of the component modules 18-21 to permit communications therebetween. Still further, the CPU module 10 streamlines the design or modification of the food/beverage dispenser 17 because the CPU module 10 facilitates the widespread distribution of monitoring and control functions to the component modules 18-21 so that such functions do not require centralization on the CPU module 10. As such, component modules from any source may be implemented in the food/beverage dispenser 17 with little or no required changes to the CPU module 10.
The CPU module 10 in this preferred embodiment may be used in combination with one of power modules 23-25, each of which includes hardware adapted to fit within any suitable available space 22 of the food/beverage dispenser 17. Each power module 23-25 is connectable to the CPU module 10 to provide power thereto. Further, the CPU module 10 distributes power received from the connected power module 23-25 to the component modules 18-21, thereby supplying necessary power thereto. The CPU module 10 is used in combination with one of power modules 23-25 due to the different power requirements of the various food/beverage dispensers 17. Illustratively, one food/beverage dispenser 17 may require less power than another food/beverage dispenser 17, which can be satisfied through the use of the low power module 23. A food/beverage dispenser 17 requiring more power might include either the medium power module 24 or the high power module 25, depending upon the total power requirement of the food/beverage dispenser 17. The power modules 23-25 therefore provide cost savings in that the power requirements of any given food/beverage dispenser 17 are specifically satisfied. Although the preferred embodiment discloses the power modules 23-35 as separate power supplies connected to the CPU module 10, those of ordinary skill in the art will recognize that the power modules 10 may be incorporated into the CPU module 10.
As illustrated in
As illustrated in
After the CPU module 10 and a power module 23-25 are installed in the food/beverage dispenser 17, the CPU module 10 must be physically connected to the first through nth component modules 32-47 of component classes 1-n of the food/beverage dispenser 17 or first through nth component modules 32-43 of component classes 1-3 and any additional component modules 44-47 of the food/beverage dispenser 17 to permit communication therebetween. The connection of the CPU module 10 not only permits communication but may also allow the distribution of power from an installed power module 23-25 to the first through nth component modules 32-47 of component classes 1-n of the food/beverage dispenser 17 or first through nth component modules 32-43 of component classes 1-3 and any additional component modules 44-47 of the food/beverage dispenser 17. Alternatively, an installed power module 23-25 may be directly connected with the first through nth component modules 32-47 of component classes 1-n of the food/beverage dispenser 17 or first through nth component modules 32-43 of component classes 1-3 and any additional component modules 44-47 of the food/beverage dispenser 17 to furnish power thereto. Although those of ordinary skill in the art will recognize that communications between the CPU module 10 and the first through nth component modules 32-47 of component classes 1-n of the food/beverage dispenser 17 or first through nth component modules 32-43 of component classes 1-3 and any additional component modules 44-47 of the food/beverage dispenser 17 could be implemented with a single bus, practical considerations, such as limited available space within the housing of the food/beverage dispenser 17, differing locations of component modules within the housing of the food/beverage dispenser 17, the necessity of maintaining proper response times between the CPU module 10 and the component modules of the food/beverage dispenser 17, and the ability of the CPU module 10 to respond to transients, will often dictate the provision of more than a single bus. The communications interface 30 accordingly includes 1-n bus connectors 64-67 that allow 1-n busses 68-71 to be distributed among the component modules of the food/beverage dispenser 17. Illustratively, a bus 68 is connected to the bus connector 64 of the communications interface 30 and to each of first through nth component modules 32-35 of component class 1. A bus 69 is connected to the bus connector 65 of the communications interface 30 and to each of first through nth component modules 36-39 of component class 2. A bus 70 is connected to the bus connector 66 of the communications interface 30 and to each of first through nth component modules 40-43 of component class 3. A bus 71 is connected to the bus connector 67 of the communications interface 30 and to each of first through nth component modules 44-47 of component class n or to each of first through nth additional component modules 44-47.
Similarly, after the CPU module 10 and a power module 23-25 are installed in the fountain drink dispenser 11, the CPU module 10 must be physically connected to the first through nth keypad modules 48-51 of component class 1, the first through nth water modules 52-55 of component class 2, the first through nth syrup modules 56-59 of component class 3, and the ice bank control module 60, the liquid level control module 61, the agitation control module 62, and the user interface module 63 to permit communication therebetween. The connection of the CPU module 10 not only permits communication but also allows the distribution of power from an installed power module 23-25 to the first through n h keypad modules 48-51 of component class 1, the first through nth water modules 52-55 of component class 2, the first through nth syrup modules 56-59 of component class 3, and the ice bank control module 60, the liquid level control module 61, the agitation control module 62, and the user interface module 63. Although those of ordinary skill in the art will recognize that the communications could be implemented with a single bus, practical considerations as previously described dictate the provision of more than a single bus. Furthermore, separation onto separate busses of time sensitive component modules, such as first through nth water modules 52-55 and first through nth syrup modules 56-59 may be desirable to prevent compromise of dispense operations due to latency in communications. Alternatively, less time sensitive component modules, such as the ice bank control module 60, the liquid level control module 61, the agitation control module 62, and the user interface module 63 may be placed on a more crowded bus. The communications interface 30 accordingly includes 1-n bus connectors 64-67 that allow 1-n busses 68-71 to be distributed among the component modules of the fountain drink dispenser 11. Illustratively, a bus 68 is connected to the bus connector 64 of the communications interface 30 and to each of first through nth keypad modules 48-51 of component class 1. A bus 69 is connected to the bus connector 65 of the communications interface 30 and to each of first through nth water modules 52-55 of component class 2. A bus 70 is connected to the bus connector 66 of the communications interface 30 and to each of first through nth syrup modules 56-59 of component class 3. A bus 71 is connected to the bus connector 67 of the communications interface 30 and to each of the ice bank control module 60, the liquid level control module 61, the agitation control module 62, and the user interface module 63.
As illustrated in
As illustrated in
The inclusion of the microcontroller 83 in the first component module 40 or the first syrup module 56 allows monitoring and control functions associated with the first component module 40 or the first syrup module 56 to be distributed to the first component module 40 or the first syrup module 56. Illustratively, the first syrup module 56 may include a valve that regulates the flow of syrup from the fountain drink dispenser 11, and the microcontroller 83 controls the valve to regulate the syrup flow therefrom. Example valves include but are not limited to open/close shut off valves, volumetric valves arranged in an open loop configuration, and volumetric valves arranged in a closed loop configuration. Accordingly, when a dispense of syrup is required from a fountain drink dispenser 11 including an open/close shut off valve, the CPU module 10 instructs the microcontroller 83 to perform the dispense. Responsively, the microcontroller 83 outputs a signal that opens the open/close shut off valve until the completion of the syrup dispense. When a dispense of syrup is required from a fountain drink dispenser 11 including a volumetric valve arranged in an open loop configuration, the CPU module 10 instructs the microcontroller 83 to perform the dispense. Responsively, the microcontroller 83 outputs a signal that toggles a solenoid valve of the volumetric valve at a frequency that delivers syrup at a desired flow rate until the completion of the syrup dispense. When a dispense of syrup is required from a fountain drink dispenser 11 including a volumetric valve arranged in a closed loop configuration, the CPU module 10 instructs the microcontroller 83 to perform the dispense. Responsively, the microcontroller 83 outputs a signal that opens a solenoid valve of the volumetric valve, a signal that sets the pulse width modulation frequency of the volumetric valve, and a signal that sets the pulse width modulation duty cycle of the volumetric valve, thereby delivering syrup at a desired flow rate until the completion of the syrup dispense. The microcontroller 83 further may monitor the valve to supply valve information such as syrup flow rate. The second component module 41 or the second syrup module 57 will not been described because their configuration and operation are identical to the first component module 40 or the first syrup module 56.
The preferred embodiment uses serial communications to implement bus 70 in a daisy chain configuration and accomplish the connection of the CPU module 10 to the first through nth component modules 40-43 or the first through nth syrup modules 56-59. Nevertheless, those of ordinary skill in the art will recognize that parallel communications could be used to implement bus 70 in the daisy chain configuration. Consequently, the first component module 40 or the first syrup module 56 includes the bus interface 84 to provide control over the bus 70 so that the microcontroller 83 can access the bus 70 to communicate with the CPU module 10 without interference from the microcontroller 87 of the second component module 41 or the second syrup module 57 as well as the microcontrollers of the third through nth component modules 42 and 43 or the third through nth syrup modules 58 and 59. The bus interface 84 is any bus interface suitable to facilitate communications over the bus 70, such as for example RS485. As illustrated in
The busses 70A-D of the bus 70 shown in
The power line 94 of bus 70A connects a power in pin 99 of the input 72 for the first component module 40 or the first syrup module 56 to a power line for the CPU module 10. The power in pin 99 accordingly facilitates the distribution of power from the CPU module 10 to the microcontroller 83, the bus interface 84, and the UART 91. The power in pin 99 further connects to a power out pin 103 of the output 73 for the first component module 40 or the first syrup module 56. The power out pin 103 connects to a power in pin 107 of the input 74 for the second component module 41 or the second syrup module 57 via the power line 94 of the bus 70B, thereby distributing power from the CPU module 10 to the second component module 41 or the second syrup module 57.
The ground line 95 of bus 70A connects a ground in pin 100 of the input 72 for the first component module 40 or the first syrup module 56 to the ground for the CPU module 10. The ground in pin 100 accordingly grounds the microcontroller 83, the bus interface 84, and the UART 91 to the ground for the CPU module 10. The ground in pin 100 further connects to a ground out pin 104 of the output 73 for the first component module 40 or the first syrup module 56. The ground out pin 104 connects to a ground in pin 108 of the input 74 for the second component module 41 or the second syrup module 57 via the ground line 94 of the bus 70B, thereby grounding the second component module 41 or the second syrup module 57 to the CPU module 10.
The communication line 96 of bus 70A connects a communication in pin 101 of the input 72 for the first component module 40 or the first syrup module 56 to the communication line for the CPU module 10. The communication in pin 101 connects to the bus interface 84 to furnish a communication line between the microcontroller 83 and the CPU module 10. The communication in pin 101 further connects to a communication out pin 10S of the output 73 for the first component module 40 or the first syrup module 56. The communication out pin 105 connects to a communication in pin 109 of the input 74 for the second component module 41 or the second syrup module 57 via the communication line 96 of the bus 70B, thereby providing a communication line between the second component module 41 or the second syrup module 57 and the CPU module 10. The remaining connections among the second through nth component modules 41-43 or the second through nth syrup modules 57-59 via busses 70C and 70D will not be described because their configuration and operation are identical to the connections among the CPU module 10 and the first and second component modules 40 and 41 or the first and second syrup modules 56 and 57 via the busses 70A and 70B.
The busses 70A-D of the bus 70 shown in
The busses 70A-D however include the communication A line 112 and the communication B line 113 to provide differential communications that reduce noise and transmission error. Illustratively, the communication A line 112 of bus 70A connects a communication in pin 114 of the input 72 for the first component module 40 or the first syrup module 56 to the communication line for the CPU module 10. Similarly, the communication B line 113 of bus 70A connects a communication in pin 115 of the input 72 for the first component module 40 or the first syrup module 56 to the communication line for the CPU module 10. The communication in pins 114 and 115 connect to the bus interface 84 to furnish a differential communication line between the microcontroller 83 and the CPU module 10. The communication in pins 114 and 115 further connect to respective communication out pins 116 and 117 of the output 73 for the first component 40 or the first syrup module 56. The communication out pins 116 and 117 connect to respective communication in pins 18 and 119 of the input 74 for the second component module 41 or the second syrup module 57 via respective communication A and B lines 112 and 113 of the bus 70B, thereby providing a differential communication line between the second component module 41 or the second syrup module 57 and the CPU module 10. The remaining connections among the second through nth component modules 41-43 or the second through nth syrup modules 57-59 via busses 70C and 70D will not be described because their configuration and operation are identical to the connections among the CPU module 10 and the first and second component modules 40 and 41 or the first and second syrup modules 56 and 57 via the busses 70A and 70B.
The communications enabled through the bus interface 84 requires the implementation of an addressing scheme whereby the CPU module 10 and the microcontroller 83 can communicate without interference from the microcontroller 87 of the second component module 41 or the second syrup module 57 as well as the microcontrollers of the third through nth component modules 42 and 43 or the third through nth syrup modules 58 and 59. Consequently, upon the initialization of the CPU module 10, the bus interface 84 is “on” due to the receipt of an “enable on” signal from the CPU module 10 via the enable line 93 of the bus 70A, the enable in pin 98, and the receive enable line 110. In the preferred embodiment, the “enable on” signal from the CPU module 10 is generated due to the connection of the asserted enable line 93. Furthermore, the microcontroller 83 outputs via the send enable line 111 an “enable off” signal to the enable out pin 102. Likewise, the microcontroller 87 and the microcontrollers of the third through nth component modules 42 and 43 or the third through nth syrup modules 58 and 59 output an “enable off” signal to their respective enable out pins. As a result, the bus interface 84 is “on” thus enabling the reception of communications from the CPU module 10, while the bus interface 88 and the bus interfaces of the third through nth component modules 42 and 43 or the third through nth syrup modules 58 and 59 are “off” thus disabling the reception of communications from the CPU module 10.
Thus, during initialization when the CPU module 10 outputs a component identifier signal, only the microcontroller 83 of the first component module 40 or the first syrup module 56 responds. The component identifier signal in the preferred embodiment requests a response from the first available component module, which in the illustration of
Similarly, the CPU module 10 and the microcontroller 87 must be able to communicate without interference from the microcontroller 83 of the first component module 40 or the first syrup module 56 as well as the microcontrollers of the third through nth component modules 42 and 43 or the third through nth syrup modules 58 and 59. After determining the component type from microcontroller 83, the CPU module 10 directs the microcontroller 83 to output via the send enable line 111 an “enable on” signal to the enable out pin 102. The bus interface 88 receives the “enable on” signal via the enable line 93 of the bus 70B, the enable in pin 106, and the receive enable line of the second component module 41 or the second syrup module 56 and turns “on” accordingly. The CPU module 10 also instructs the microcontroller 83 to ignore the next component identifier signal so that only the microcontroller 87 of the second component module 41 or the second syrup module 57 responds. Once the CPU module 10 receives a response from the microcontroller 87, it provides an address for the second component module 41 or the second syrup module 57 to permit communications therebetween and begins by requesting the microcontroller 87 transmit its component type. Illustratively, the microcontroller 87 would inform the CPU module 10 it is a syrup module. The assigning of addresses by the CPU module 10 for each of the third through nth component modules 42 and 43 or the third through nth syrup modules 58 and 59 will not be described because it is identical to the assigning of addresses for the first and second component modules 40 and 41 or the first and second syrup module 56 and 57.
After the CPU module 10 assigns an address and ascertains the component type for each of the first through nth component modules 40-43 or the first through nth syrup modules 56-59, the CPU module 10 can communicate with any one of the first through nth component modules 40-43 or the first through nth syrup modules 56-59 without interference from the remaining first through nth component modules 40-43 or first through nth syrup modules 56-59. Illustratively, when the CPU module wishes to communicate with the second component module 40 or the second syrup module 57, the CPU module 10 outputs on the communication line 96 or the communication A and B lines 112 and 113 the address for the second component module 40 or the second syrup module 57 along with the communication. The microcontroller 83 of the first component module 40 or the first syrup module 56 as well as the microcontrollers for the third through nth component modules 42-43 or the third through nth syrup modules 58-59 recognize the address is not for the first component module 40 or the first syrup module 56 or any one of the third through nth component modules 42-43 or the third through nth syrup modules 58-59 and thus ignore the communication. The microcontroller 87 of the second component module 41 or the second syrup module 57 however recognizes the address is for the second component module 41 or the second syrup module 57 and thus receives the communication. In the preferred embodiment, each communication from the CPU module 10 elicits a response from the particular one of the first through nth component modules 40-43 or the first through nth syrup modules 56-59 receiving the communication. Consequently, when the microcontroller 87 wishes to communicate a response to the CPU module 10, the bus interface 88 of the second component module 41 or the second syrup module 57 seizes control of the bus 70 so that the microcontroller 87 can output the communication, which is received by the CPU module 10.
While the preferred embodiment implements a cascaded enable in and enable out addressing scheme, those of ordinary skill in the art will recognize many other addressing schemes. Illustratively, alternative addressing schemes not requiring the cascaded enable in and enable out include, but are not limited to, the inclusion of DIP switches, silicon serial numbers, or the like on the component modules.
Accordingly, as described above, the CPU module 10 issues instructions to the microcontrollers of the first through nth component modules 32-47 of component classes 1-n of the food/beverage dispenser 17 or first through nth component modules 32-43 of component classes 1-3 and any additional component modules 44-47 of the food/beverage dispenser 17. The microcontrollers responsive to the issued instructions perform the tasks necessary for the food/beverage dispenser 17 to deliver a food/beverage to an end user. As such, the CPU module 10 provides master command and control over the first through nth component modules 32-47 of component classes 1-n of the food/beverage dispenser 17 or first through nth component modules 32-43 of component classes 1-3 and any additional component modules 44-47, which locally execute monitoring and control instructions, thereby providing the food/beverage dispenser 17 with a distributed architecture. In distributing monitoring and control to component modules 32-47, it should be understood that many components might be interfaced with the CPU module 10. Illustratively, one of the component modules 32-47 could be the auxiliary communications interface 31, which would be physically separate from the CPU module 10 but electrically coupled thereto via one of the busses 68-71.
While the food/beverage dispenser 17 may be implemented in first through nth component modules 32-47 arranged according to classes as well as in additional component modules 44-47, those of ordinary skill in the art will recognize the food/beverage dispenser 17 may be implemented in more complex component modules. Illustratively, as shown in
Although the present invention has been described in terms of the foregoing embodiment, such description has been for exemplary purposes only and, as will be apparent to those of ordinary skill in the art, many alternatives, equivalents, and variations of varying degrees will fall within the scope of the present invention. That scope accordingly, is not to be limited in any respect by the foregoing description; rather, it is defined only by the claims that follow.
| Number | Date | Country | |
|---|---|---|---|
| 60474588 | May 2003 | US |
